9w+63=27
27-63= -36
-36•/•9=-4
answer: -4=w
hope this helps
Answer:
-9
Step-by-step explanation:
Part a)
The simple random sample of size n=36 is obtained from a population with

and

The sampling distribution of the sample means has a mean that is equal to mean of the population the sample has been drawn from.
Therefore the sampling distribution has a mean of

The standard error of the means becomes the standard deviation of the sampling distribution.

Part b) We want to find

We need to convert to z-score.

Part c)
We want to find

We convert to z-score and use the normal distribution table to find the corresponding area.

Part d)
We want to find :

We convert to z-scores and again use the standard normal distribution table.

Answer: We are supped to solve for y so it will be division because that's the inverse for x. so: x/4 is your answer.